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- SONY-PCG31311TBIOS · 2.00 MB · 5 May 2025BIOS bin—2.00 MB
- SONY-PCG31311TBIOS · 2.00 MB · 10 Jul 2019BIOS bin—2.00 MB
- Sony Vaio PCG31311T=2=BIOS · 512 KB · 26 May 2022BIOS zip—512 KB
- Sony Vaio PCG31311T=2=Archive · 512 KB · 19 May 2020Archive zip—512 KB
- Sony Vaio PCG31311T=2= (Luirons Bios)BIOS · 925 KB · 23 Feb 2021BIOS rar—925 KB
- Sony Vaio PCG31311T=2=
Firmware archive for a Sony Vaio identified only by model code PCG31311T; the =2= mark in the name is not explained.
BIOS · 951 KB · 27 Feb 2018BIOS zip—951 KB